Definition of benzocaine in US English:



  • A white, odorless, crystalline powder used in ointments as a local anesthetic and to protect against sunburn.

    Chemical formula: NH₂C₆H₄C₆H₄NH₂

    • ‘Prior to insertion, the nasopharynx and oropharynx should be anesthetized with a topical spray such as benzocaine.’
    • ‘An ear drop for pain relief is one that normally contains an anesthetic or an anti-inflammatory, such as an analgesic otic solution or an earache drop comprising antipyrine or benzocaine.’
    • ‘Some women find colposcopy very painful while others hardly notice it, according to a clinical trial testing topical benzocaine and ibuprofen against placebo.’
    • ‘Over-the-counter drugs such as carbamide peroxide, benzocaine, menthol, or eucalyptol can lessen the pain.’
    • ‘Local anaesthetics - for example benzocaine, lignocaine are used in both lozenges and throat sprays.’


1920s: from benzoic acid + -caine (from cocaine).